What about you compare their range also? Or their moving accuracy? Or Jackson HVAP ability?
Btw you have a funny substantiation. "50% more armor means the tank is 50% more effective than the other tank". Welp, a Panther will still get penned by a vet 2 SU85 or Jackson HVAP shot in 100% of the cases.
HVAP - it is not needed against the panther, it is needed against heavy tanks, like the Tiger, or the Jagdtiger. And this is not a bonus, it is a must.
And this is a necessity (HVAP) is not free.
And is available only to a veteran.
It turns out that if there is no Jackson veteran, and the munition is over, then you have absolutely nothing against the king tiger and JagdTiger. Or you should have at least 2 Jackson, and you should take a risk, going to the rear of the KT and Jagdtiger. And if support in the form of simple infantry with Faust is nearby, then you lose. Again.
But you present HVAP as something very powerful and free bonus. Just find out what kind of armor and health Jackson’s opposition has.
Tiger - Armor:300/140 Health: 1040
KingTiger - Armor: 375/150 Health: 1280
JagdTiger - Armor: 525/110 Health: 1280